For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningFront Side Door Weatherstrip Replacement - Door Side
Front Side Door Check Bolt
Caution: Refer to Fastener Caution in the Preface section.
Tighten
25 N·m (19 lb ft)
Front Side Door Weatherstrip - Door Side
Procedure
Unclip weatherstrip 1. from front side door.
When removing protective liners from adhesive tape, be careful no ...
Rear Side Door Trim Replacement
Rear Side Door Inside Handle Bolt Finish Cap
Procedure
Pull handle back to remove cap. Use suitable tool to unsnap.
Rear Side Door Inside Handle Screw
Caution: Refer to Fastener Caution in the Preface section.
Tighten
2.5 N·m (23 lb in)
Rear Side Door Pull Handle Screw
T ...
Radio Reception
Frequency interference and static can occur during normal radio reception if
items such as phone chargers, vehicle convenience accessories, and external electronic
devices are plugged into the accessory power outlet. If there is interference or
static, unplug the item from the accessory power ...